Connecting arrangement for discharging devices



0011. 3, 1933. L, Koms 1,928,858

CONNECTING ARRANGEMENT FOR DISCHARGING DEVICES Filed NOV. 11, 1929Patented Oct. 3, 1933 UNITED STATES CONNECTING ARRANGEMENT FORDISCHARGING DEVICES Ladislaus Kiiriis, Berlin-Tempelhof, Germany,

assignor to N. Netherlands Application November V. Stabilovolt,s-Gravenhage,

11, 1929, Serial No.

406,487, and in Hungary November 15, 1928 4 Claims.

The present invention relates to an arrangement which will permit theterminal voltage for a consumer, which may be a three element vac uumtube, to be kept constant not only within narrow limits, but also withinrelatively wide limits. The invention utilizes the effect of a sparkingor discharge device, such as a glow tube, connected in series withslightly loaded or temporarily unloaded consumers. The present inventionis characterized in that an additional resistance is connected inparallel to the consumer, which resistance is so dimensioned that thesparking or discharge device will always work on the rising portion ofits characteristic even with the slightest load on the consumer.

An embodiment of the arrangement according to this invention isillustrated by Way of example in the drawing.

Figure 1 shows diagrammatically the characteristic of a discharge device(luminous or glow tube),

Figures 2 and 3 are diagrammatic views of modified connections.

Referring to Figure l the characteristic consists of an incliningportion 1 which merges at the point 2 into the rising portion 3. On thisportion 3 the arrangement according to the invention will be operated.

For that purpose an additional resistance, as already mentioned isconnected in parallel" to the consumer, which is a triode 'in thearrangement illustrated by way of example in Figures 2 and 3.

The consumer is represented, as stated by a triode a, whose anodecircuit is connected in series with the sparking or discharge device v.A resistance 0 is connected in parallel with the consumer a, whichrepresents a point of consumption of the excess current. Said resistancecan consist of an ohmic or an inductive resistance, or also of adischarge tube. It must only possess a physical property which increasesthe load on the discharge tube b to such an extent that the device willconstantly operate on the rising portion of its characteristic.

With the connection shown in Figure 3 there is provided a potentiometerarrangement, since periodic discharges of a condenser connected inparallel with the consumer a are to be avoided. 'I'husthe consumer willexert a capacity efiect. The part c1 of the auxiliary resistance may beof any suitable type, while 02 must be a resistance which possesses anincreasing voltage drop 55 at an increasing intensity of current, andwhose value is high enough to prevent periodic discharges of thecondenser. At the least, the value of 02 must be so high that thedischarges will take place so slowly that their disturbing actions willbe insignificant, or so small that no material fluctuations of voltageare caused in the circuit of the useful consumer a.

The arrangement according to this invention may be used to advantage ininstances where the strain or load on the consumer (I is only slight, asfor instance with electronic tubes previous to their becomingsufiiciently heated, or where the load decreases periodically, as forinstance with electronic tubes which serve for the generation oramplification of oscillations.

I claim:

1. In a system for maintaining the terminal voltage of electric supplylines at their points of connection to a consumer, the combination of anelectric discharge path arranged in the lines solely in series with theconsumer whereby no consumer is arranged in parallel with the dischargepath, the voltage characteristic of said discharge path being such as toprovide an initial falling portion and a subsequent rising portionterminating in a portion of constant voltage, and a resistance arrangedin the lines in parallel with the consumer, said resistance beingproportioned so that said discharge path will operate on the risingportion of its resistance characteristic irrespective of the load on theconsumer.

2. The combination for the purpose and of the character recited by claim1 which has a second resistance having the characteristic of increasingin resistance upon an increase in current, arranged in the lines inseries with the said electric discharge path.

3. In a system for maintaining the terminal voltage of electric supplylines at their points of connection to a consumer which latter may havea capacitive effect, the combination of an electric discharge patharranged in the lines in series with the consumer, a resistance arrangedin the lines in parallel with the consumer, and a second resistancearranged in the lines in series with said discharge tube, the firstnamed of said resistances being proportioned so that said discharge pathwill operate on the rising portion of its resistance characteristicirrespective of the load on the consumer, and said second resistancebeing proportioned to prevent periodical discharges of the consumer ifand when it has a capacitive effect.

4. In a system for maintaining the terminal voltage of electricsupply-lines at their points of connection to a consumer, a pair ofsupply lines, a glow tube in the first of said supply lines, aresistance connected in series with the glow tube in said first line onthe side adjacent the consumer, a second resistance in parallel with theconsumer, and a condenser in parallel with the consumer.

LADISLAUS KoRos.

